8SII

Crystal Structure of CBX7 with compound UNC4976

• PDB DOI: https://doi.org/10.2210/pdb8SII/pdb

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens, synthetic construct
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2023-04-16 Released: 2024-09-04 
• Deposition Author(s): Song, X., Dong, A., Huang, R., Arrowsmith, C.H., Edwards, A.M., Min, J., Structural Genomics Consortium (SGC)
• Funding Organization(s): Other private

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.37 Å
• R-Value Free: 0.223 
• R-Value Work: 0.197 
• R-Value Observed: 0.198 

Starting Model: experimental

Literature

Crystal Structure of CBX7 with compound UNC4976

Song, X., Dong, A., Huang, R., Arrowsmith, C.H., Edwards, A.M., Min, J., Structural Genomics Consortium (SGC)

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 15.79 kDa 
• Atom Count: 1,286 
• Modelled Residue Count: 124 
• Deposited Residue Count: 124 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chromobox protein homolog 7	A, B	56	Homo sapiens	Mutation(s): 0  Gene Names: CBX7
UniProt & NIH Common Fund Data Resources
Find proteins for O95931 (Homo sapiens) Explore O95931  Go to UniProtKB:  O95931
PHAROS:  O95931 GTEx:  ENSG00000100307

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
UNC4976	C [auth F], D [auth G]	6	synthetic construct	Mutation(s): 0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth A], F [auth A], H [auth B], I [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	G [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
CL	J [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
5R5	C [auth F], D [auth G]	L-PEPTIDE LINKING	C4 H9 N O3		SER

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.37 Å
• R-Value Free: 0.223 
• R-Value Work: 0.197 
• R-Value Observed: 0.198 
• Space Group: P 2₁ 2₁ 2₁
• Diffraction Data: https://doi.org/10.18430/M38SII

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 38.735	α = 90
b = 40.514	β = 90
c = 83.172	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-3000	data scaling
PHASER	phasing
HKL-3000	data reduction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-09-04 
Deposition Author(s): Song, X., Dong, A., Huang, R., Arrowsmith, C.H., Edwards, A.M., Min, J., Structural Genomics Consortium (SGC)

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Funding Organization	Location	Grant Number
Other private	Canada	--

Revision History  

• Version 1.0: 2024-09-04
  Type: Initial release